nycRads- One person in our group of applicants got a "love" call and email from MGH. That is all I know out east.
Out west I know a different person who got a "ranked to match" call from UCSF.
For me, I've had calls or emails (mostly) from about half the programs I applied to, all different programs than those above - although I did interview at both. Most were informational (NRMP IDs, instructions, etc.) or asking me if I had any questions. Only one out of those was personal and very positive.
I agree with bgb...I imagine the same group of 10 applicants will be getting the homerun calls from an entire tier of programs, but obviously there are 10x(?) as many spots by the time they all fill. And some don't contact anybody.